Fountain pen



FIG. 1 is a front elevational view of a fountain pen showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front elevational view of the fountain pen with the cap removed from the writing tip and placed on the opposite end;

FIG. 7 is a right side elevational view of FIG. 6, the left side being a mirror image thereof;

FIG. 8 is a rear elevational view of FIG. 6;

FIG. 9 is an exploded perspective view of FIGS. 1 and 6; and

FIG. 10 is a bottom plan view of FIG. 6. 

The ornamental design for a fountain pen, substantially as shown and described. 